Honeywell TH6100AF2004 T6 Pro Hydronic Programmable Thermostat User Guide

June 6, 2024
Honeywell

Honeywell LogoT6 Pro Hydronic
Programmable Thermostat TH6100AF2004
User Guide

Honeywell TH6100AF2004 T6 Pro Hydronic Programmable

Package Includes:

  • T6 Pro Hydronic Programmable Thermostat
  • Floor sensor (model AQ12C20)
  • UWP™ Mounting System
  • Decorative Cover Plate
  • Screws and anchors
  • 2 AA Batteries
  • Thermostat literature

Thermostat controls

Honeywell TH6100AF2004 T6 Pro Hydronic Programmable -
controls

The screen will wake up by pressing any of the five buttons. If powered by the C wire, the screen stays lit for 45 seconds after you complete changes. If powered by battery only,  the screen stays lit for 8 seconds. Depending on how your thermostat was installed, the screen light may always be on.

Read before installing

Temperature control modes

Your T6 Pro Hydronic Programmable Thermostat can be set to operate in one of 3 different control modes. These settings determine which temperature is measured,  controlled and displayed on the thermostat home screen. Each thermostat in your home can be set to a different control mode. Please ask your local heating professional which controls mode is used for you to better control the Thermostat.

A mode (Air temperature only): Controls and displays the ambient air temperature only.Honeywell TH6100AF2004 T6 Pro Hydronic Programmable - A, AF
mode

F mode (Floor temperature only): Controls and displays the floor temperature only using an external floor temperature sensor. This control mode is typically used in areas such as bathrooms where floor temperature could be scheduled to be warm only during occupied, morning and evening periods.Honeywell TH6100AF2004 T6 Pro Hydronic Programmable - F
mode

  • The actual floor temperature is indicated by the “FLR” text above the actual floor temperature value.
  • Floor temperature setpoint is not displayed until you press + or – for setting
  • Actual ambient air temperature could also be displayed in the thermostat MENU/

AF mode (both Air and Floor temperatures): Controls and displays the ambient air temperature as well as maintains the floor temperature within desired floor temperature limits using an external floor temperature sensor. Setting the minimum and maximum floor temperature limits is done by your local heating professional and is a way for you to enhance comfort and to protect your floor covering at the same time.Honeywell TH6100AF2004 T6 Pro Hydronic
Programmable - Temperatures menu

  • The minimum floor temperature limit will override the air temperature in this mode, and if set too high, may overheat the Please contact your installer if this occurs.
  • Actual floor temperature could also be displayed in the thermostat MENU/ TEMP

System operation settings

  1. Press the Mode button to cycle to the next available System mode.Honeywell TH6100AF2004 T6 Pro Hydronic Programmable - operation settings
  2. Cycle through the modes until the required System mode is displayed and leave it to activate.

System modes:

  • Heat
  • Off

Set the time and date

Time

  1. Press Menu on your thermostat.
  2. Press + or – to go to TIME. Press Select.
  3. Press ‘+ or – to choose between 12 or 24 hours. Press Select.
  4. Use .4. or – to adjust the hour. Press Select.
  5. Use:+` or – to adjust the minutes. Press Select to exit the Time menu.

Date

  1. If previously setting time, continue to Step 2. If at the Home screen, press Menu on your thermostat.
  2. Press + or – to go to DATE. Press Select.
  3. Use + or – to adjust the year. Press Select.
  4. Use the + or – to adjust the month. Press Select.
  5. Use the + or – to adjust the day. Press Select to save and exit the Date menu.

Program schedule

You can program four time periods each day, with different settings for weekdays and weekends. We recommend the pre-sets (shown in the table below), since they can reduce your heating expenses.

Wake – Set to the time you wake up and the temperature you want during the morning, until you leave for the day.
Away – Set to the time you leave home and the temperature you want while you are away (usually an energy-saving level).
Home – Set to the time you return home and the temperature you want during the evening, until bedtime.
Sleep – Set to the time you go to bed and the temperature you want overnight (usually an energy-saving level).
NOTE : To temporarily or permanently override any of the above program schedules, see page 5.

Honeywell TH6100AF2004 T6 Pro Hydronic Programmable - Program
schedule

Depending on which temperature control mode the thermostat is configured for (see page 2), you will be programming either air or floor temperature. Floor temperature will be indicated with FLR text above the actual temperature value.

To adjust program schedules

  1. Press Menu on your thermostat.
  2. PROG is displayed. Press Select. Then ON is displayed. (If you do not want to use a schedule, press + or to display OFF. Press Select.) Press Select.
  3. Press + or – to select day or set of days to edit. Press Select.
  4. Press + or 7 to select a schedule period to edit (Wake, Away, Home, and Sleep). Press Select.
  5. ON is displayed. Press Select to keep the schedule period on. Or press +i and then Select to turn off the schedule period.
  6. Time starts blinking. Press ‘+, or; to adjust the schedule period start time. Press Select.
  7. The temperature starts blinking. Press + or – to adjust the “Heat” setpoint temperature. Press Select.
  8. Repeat steps 4 through 7 for the remaining schedule periods.
  9. Press Home when you’re finished to save and return to the home screen.
  10. The schedule can be adjusted and turned ON or OFF by returning to Menu and following the steps provided above.Honeywell TH6100AF2004 T6 Pro Hydronic Programmable - adjust program

Program schedule override (temporary)

  1. Press + or – to adjust the temperature.
  2. Once at the desired setpoint temperature, no further action is needed. The new setpoint temperature will be held until the next scheduled time period begins. For more information on schedule time periods, see “Program schedule” on page 4.
  3. To cancel the Temporary Hold, Press + or – and then press Cancel.Honeywell TH6100AF2004 T6 Pro Hydronic Programmable - override

Program schedule override (permanent)

  1. Press 4: or 7, to adjust the temperature.
  2. TEMPORARY HOLD is displayed and the setpoint temperature flashes. While it’s flashing, press the Hold (Mode) button to change to Permanent Hold.
  3. To cancel the Permanent Hold, press + or – and then press Cancel.

NOTE: Depending on which temperature control mode the thermostat is configured for (see page 2), you will be adjusting either air or floor temperature. Floor temperature will be indicated with FLR text above the actual temperature value. The floor temperature setpoint is hidden on the home screen in this case and will be displayed again by pressing + or -.2.

**Vacation program schedule override (temporary)

**

Vacation overrides the current program schedule for a longer period of time. You might use this feature when you know you’ll be away for a while.

  1. Press Menu on your thermostat.
  2.  Press +or – to go to VACA. Press Select. Days number starts blinking.
  3. Press +or – to set the number of days you want the new temperature setpoint to override your program schedule. Press Select. The temperature setpoint starts blinking.
  4. Press +or – to adjust the temperature setpoint for these days. Press Select to activate your vacation schedule and return to the thermostat home screen.

NOTES:

  • The active vacation schedule is indicated via VACA above the temperature displayed on the thermostat home screen.
  • After the vacation period ends, the thermostat will follow your regular program schedule.
  • To return back to your normal program schedule before the vacation schedule ends, press Cancel on the thermostat home screen.Honeywell TH6100AF2004 T6 Pro Hydronic Programmable - A 2

ECO (Economy) mode

If your thermostat is configured to operate in AF mode (see page 2) and the program schedule is followed, you can disable the minimum floor temperature limits set by your local heating professional during away and sleep periods. Depending on your heating system installation and floor type used, disabling the minimum floor temperature limit setting can reduce your energy bills during times when comfort is not required (Away and Steep periods). Your floor covering and the system remains protected as the thermostat keeps controlling the maximum floor temperature limit and minimum freeze protection temperature all the time.

  1. Press Menu on your thermostat.
  2. Press + or – to go to ECO. Press Select.
  3. Press + or – to turn Eco mode ON or OFF. Press Select.

NOTE: Eco mode is available in the thermostat menu only if the thermostat is configured for AF control mode and is disabled (OFF) by default.

Setting degrees Fahrenheit (F) or Celcius (C)

  1. Press Menu.
  2. Press + or – to go to F / C. Press Select
  3.  Press + or – to select F or C. Then press Select.
  4.  Press Home to return to the home screen.

Adjusting keypad lockout

  1. Press Menu on the thermostat.

  2. Press + or – to go to LOCK. Press Select.

  3. Press + or – to go to OFF, PART, or ON, and then press Select. OFF: Unlocked, and full access allowed.
    PART: Partial lockout, allowing only the temperature to be changed. ON: No access allowed.

  4. To unlock the keypad, press the CENTER button and then enter the password “1234”. To enter the password, press + or – to change the first digit of the number. Then press Select. Repeat this process to enter the second through fourth digits of the number. Once all four numbers have been entered, press Select again.

  5. This will unlock the keypad.

  6. If the code is incorrect, the screen will flash the lines —“.

  7. Press Back to go back a step to enter the correct number and press Select.

NOTE: On some models, the keypad lockout setting is only available in the installer menu and not available in the user menu.

Adaptive Intelligent Recovery

Over time, the Resideo T6 Pro Thermostat learns” how long it takes your system to reach the temperature you want. It turns on the heating system earlier to make sure you’re comfortable at the time you expect.

Battery replacement

Batteries are optional (to provide backup power) if your thermostat was wired to run on AC power when installed. If your thermostat was not wired to run on AC power, then batteries are required.
Install fresh batteries immediately when the low battery icon appears. The icon appears about two months before the batteries are depleted.
Even if the low battery icon does not appear, you should replace batteries once a year, or before leaving home for more than a month. If batteries are inserted within two minutes, the time and day will not have to be reset. All other settings are permanently stored in memory and do not require battery power.
NOTE: When replacing batteries, alkaline batteries are recommended.

When the low battery warning appears, press gently to loosen the thermostat and then carefully pull it from the wall mount.Honeywell TH6100AF2004 T6 Pro
Hydronic Programmable - thermostat

Alerts
If there is an alert or reminder, the alert icon appears on the Home screen.
Low Battery Warning

  1. The batteries need to be replaced when BATT, the alert icon, Warning-icon.pngand the battery icon are displayed on the Home screen.
  2. When the battery power is very low, the thermostat’s backlight is disabled to save battery power.
  3. When battery power is critically low, only BATT, the alert icon,Warning-icon.png and the battery icon are displayed.

Snoozing and clearing alerts or **reminders***

  1. Press Menu, and then press + until display shows ALRT.
  2. Press Select to display which alert(s) are present.
  3. The word SNZE (SNOOZE) appears.
  4. Press Select again to snooze the reminder for 7 days.
  5. To clear the alert, press Select, and then press (I) to go to CLER (Clear).
  6. Press Select to clear the reminder.

Some alerts cannot be snoozed or cleared.
Please call your local heating professional if this occurs. The system may require service.

Troubleshooting

If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.

Display is blank| • Check circuit breaker and reset if necessary.
• Make sure power switch for the heating system is on.
• Make sure fresh AA alkaline batteries are correctly installed (see page 8).
---|---
Heating system does not respond| • Press Mode button to set system Heat (see page 3).
Make sure the desired temperature is set higher than the inside temperature.
• Check circuit breaker and reset if necessary.
• Make sure power switch for heating system is on.
• Wait 5 minutes for the system to respond.
Temperature settings do not change| Make sure heating temperature is set to an acceptable range:
• Heat: 40 °F to 90 °F (4.5 °C to 32.0 °C)

Electrical ratings

Terminal Voltage (50 Hz/60 Hz) Running Current
W Heating 20 VAC – 30 VAC 0.0 A – 1.0 A

5-year limited warranty

Resideo warrants this product, excluding battery, to be free from defects in workmanship or materials, under normal use and service, for a period of five (5) years from the date of first purchase by the original purchaser. If at any time during the warranty period the product is determined to be defective due to workmanship or materials, Resideo shall repair or replace it (at Resideo’s option).
If the product is defective, (i) return it, with a bill of sale or other dated proof of purchase, to the place from which you purchased it; or
(ii) call Resideo Customer Care at 1-800-468-1502. Customer Care will make the determination whether the product should be returned to the following address:
Resideo Return Goods, 1985 Douglas Dr. N., Golden Valley, MN 55422, or whether a replacement product can be sent to you.
This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Resideo that the defect was caused by damage that occurred while the product was in the possession of a consumer.
Resideo’s sole responsibility shall be to repair or replace the product within the terms stated above. RESIDEO SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE  OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF  ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY RESIDE MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED WARRANTIES,  INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE FIVE-YEAR DURATION OF THIS WARRANTY.
Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state. If you have any questions concerning this warranty, please write  Resideo Customer Care, 1985 Douglas Dr, Golden Valley, MN 55422or call 1-800-468-1502.

CAUTION: ELECTRICAL HAZARD
Can cause electrical shock or equipment damage. Disconnect power before beginning installation.
CAUTION: MERCURY NOTICE
If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact your local waste management authority for instructions regarding recycling and proper disposal.
Regulatory information
FCC – 47 CFR § 15.21, 15.105 (b)
See https://customer.resideo.com/en-US/support/residential/codes-and- standards/FCC15105/Pages/default.aspx
for additional FCC information for this product.

Resideo logoResideo Technologies Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
33-00343EFS—05 M.S. Rev. 05-20 | Printed in United State
www.resideo.com

© 2020 Resideo Technologies, Inc. All rights reserved.
The Honeywell Home trademark is used under license from Honeywell International, Inc. This product is manufactured by Resideo Technologies, Inc. and its affiliates.
Honeywell TH6100AF2004 T6 Pro Hydronic Programmable -
SN

References

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